Attempts at the beneficiation of lateritic nickel ore

Onodera, Jiroh; Inoue, Takuya; Imaizumi, Tsunemasa

doi:10.1016/0301-7516(87)90030-5

Cited by 15 publications

(6 citation statements)

References 3 publications

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“…On the other hand, for pyrometallurgical nickel extraction processes, the ratio / should not be higher than 2, since they are conditions for the melting and efficiency of the process [52], this investigation reports a ratio / of 1.8 so it is located in the desired range1.5~2.0. The direct and inverse flotation without activation with a recovery of 16% coincide with the results of the literature previously had Table 1 [3,13]. It is for this reason that pretreatments are suggested to the ores before the concentration processes.…”

Section: Sulfidization Activationsupporting

confidence: 88%

“…11 observe the results of a direct flotation process. Tests direct flotation were used as collector oleic acid at 250 g/t, foaming the Aerofroth 65 to 200 g/ton changing acidic pH with sulfuric acid and basic pH with sodium hydroxide, with a variety of pH between 3 and 9. in this test the results reported in the literature [13] it is confirmed that the direct flotation is not efficient for oxides in laterite deposits.…”

Section: Direct Flotationsupporting

confidence: 85%

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Nickel laterite concentration through a non-conventional method with surface sulfidization

Rúa

Arias

Baena

2020

DYNA

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Nickel ores are found mainly as sulfides and laterites in oxidized ores, such as iron oxides, which are usually “Ni-bearing”. This investigation determined the physical-chemical conditions necessary to increase the tenor and recovery in lateritic deposits, with the implementation of a new technology that allows the increase of the tenor (a process called “up-grading”). The froth flotation is proposed as a concentrating process to increase the Nickel content in the lateritic deposits. By means of sulfidization and direct flotation, specific hydrophobicity of the mineral is achieved, substantially improving the nickel concentrations in the process, with recoveries close to 86%, which, compared with conventional direct and inverse floats without effecting this activation with Na2S, results in recoveries of 70% and 16%, respectively. The reverse flotation also increases the Nickel content with an approximate recovery of 70%; however, the froth flotation, with activation Na2S is still better.

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Section: Sulfidization Activationsupporting

confidence: 88%

Section: Direct Flotationsupporting

confidence: 85%

Nickel laterite concentration through a non-conventional method with surface sulfidization

Rúa

Arias

Baena

2020

DYNA

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“…Attempts have been made to upgrade nickel from laterites, with the methods including grinding, flotation, magnetic separation, selective reduction followed by magnetic separation, selective sulphidation, and so on. The success of nickel upgrade was determined by the mineralogy of the nickel laterite (Agatzini-Leonardou et al, 2004;Onodera et al, 1987;Narasimhan et al, 1989;Acharya et al, 2010;Zhu et al, 2012;Harris et al, 2011;Tong et al, 2012). Velázquez et al (2008) studied the grindability of a binary mixture of serpentine and limonite components.…”

Section: Introductionmentioning

confidence: 99%

Stirred milling kinetics of siliceous goethitic nickel laterite for selective comminution

Tong

Klein

Zanin

et al. 2013

Minerals Engineering

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“…For these reasons, this technique has not been applied in industry yet. Onodera, Agatzini-Leonardou, and others have studied beneficiation methods for laterite ore [12][13]. The results revealed that the consumption of acid caused the decrease of recovery rate of nickel.…”

Section: Introductionmentioning

confidence: 87%

Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore

Tang

Liu

et al. 2014

Int J Miner Metall Mater

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Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700-1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T). Composition analysis indicates that the nickel laterite ore contains a total iron content of 22.50wt% and a total nickel content of 1.91wt%. Its mineral composition mainly consists of serpentine, hortonolite, and goethite. During the reduction process, the grade of nickel and iron in the products increases with increasing reduction temperature. Although a higher temperature is more favorable for reduction, the temperature exceeding 1000°C results in sintering of the products, preventing magnetic separation. After magnetic separation, the maximum total nickel and iron concentrations are 5.43wt% and 56.86wt%, and the corresponding recovery rates are 84.38% and 53.76%, respectively.

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Attempts at the beneficiation of lateritic nickel ore

Cited by 15 publications

References 3 publications

Nickel laterite concentration through a non-conventional method with surface sulfidization

Nickel laterite concentration through a non-conventional method with surface sulfidization

Stirred milling kinetics of siliceous goethitic nickel laterite for selective comminution

Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore

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